.not-found{ 
    background-color: #f0f2f5; 
    height: 100%; 
    .left { 
        height: 100%; 
        background: url('./images/404.png') no-repeat center; 
    } 
    .right { 
        padding-left: 50px;
        margin-top: 150px; 
        h1 { font-size: 35px; } 
        h2 { margin-bottom: 20px; font-size: 20px; }
    }
}
